EFFECT OF Cd,Pb STRESS ON SCARENGING SYSTEM OF ACTIVATED OXYGEN IN LEAVES OF TOBACCO
Cd、Pb胁迫对烟草叶片中活性氧清除系统的影响

The effect of Cd,Pb stress on scarenging system of activated oxygen indicated that content of chlorophyll,chlorophyll a/b ratio and activity of CAT gradually decrease,the activity of SOD increase first and decrease afterwards,the activity of POD gradually increase with the consistency of Cd,Pb treatment.Between Cd and Pb,there is a synergistical action on effect of scarenging system of activated oxygen.The results indicated that Cd,Pb stress affect scarenging system of activated oxygen and result in imbalance of activated oxygen metabolism